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公开(公告)号：US5020310A
公开(公告)日：1991-06-04
申请号：US513305
申请日：1990-04-20
申请人： Hiroshi Oshima , Hideo Okura
发明人： Hiroshi Oshima , Hideo Okura
CPC分类号： A01D34/74 , A01D2101/00
摘要： A lawn mower comprising a vehicle body including a first connecting frame in a forward portion thereof, and a vertically adjustable grass cutting unit including a second connecting frame for pin connection to the first connecting frame. The first connecting frame defines two pin-receiving bores arranged horizontally, one of which is a circular fitting bore and the other a slot providing play. The second connecting frame defines three pairs of pin-receiving bores, the respective pairs being disposed at different heights from the ground. The slot in the first connecting frame has a sufficient length to be connected to one of the top or bottom bores of the second frame while the circular bore is connected to the diagonally opposite bore of the second frame.
摘要翻译： 一种割草机，其包括车体，其包括在其前部的第一连接框架和可垂直调节的草切割单元，其包括用于销连接到第一连接框架的第二连接框架。 第一连接框架限定水平布置的两个销接收孔，其中一个是圆形装配孔，另一个是提供游隙的槽。 第二连接框架限定三对销接收孔，各对配置在与地面不同的高度处。 第一连接框架中的狭槽具有足够的长度以连接到第二框架的顶部或底部孔中的一个，同时圆形孔连接到第二框架的对角相对的孔。
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公开(公告)号：US5231891A
公开(公告)日：1993-08-03
申请号：US893957
申请日：1992-06-04
CPC分类号： G05G1/305 , F16H59/06 , Y10T74/20061 , Y10T74/20528 , Y10T74/20888 , Y10T74/209 , Y10T74/20906
摘要： A change speed pedal mechanism for controlling a transmission of a working vehicle comprises a first pedal pivotable on an axis extending transversely of a vehicle body, and a second pedal disposed adjacent the first pedal and pivotable on an axis extending longitudinally of the vehicle body. The first pedal is connected to the transmission such that its depression shifts the transmission in a forward accelerating direction. The second pedal includes a linkage arm extending to a position under the first pedal. When the second pedal is depressed, the linkage arm lifts the first pedal, thereby shifting the transmission in a backward accelerating direction.
摘要翻译： 用于控制作业车辆的变速器的变速踏板机构包括可绕车身横向延伸的轴线上枢转的第一踏板，以及邻近第一踏板设置的第二踏板，并且能够在沿车身纵向延伸的轴线上枢转。 第一踏板连接到变速器，使得其下坡沿前进加速方向移动变速器。 第二踏板包括延伸到第一踏板下方的位置的联动臂。 当第二踏板被压下时，联动臂升起第一踏板，从而沿着向后加速方向移动变速器。
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公开(公告)号：US5012907A
公开(公告)日：1991-05-07
申请号：US506127
申请日：1990-04-09
摘要： A transmission comprises transmission shafts connected to right and left wheels, respectively. Each transmission shaft has a side clutch and a side brake. The side clutch includes clutch balls movable radially of the transmission shaft between a clutching position engaged with a first engagement portion of the transmission shaft and a declutching position radially retracted from the transmission shaft. The side brake includes brake balls movable radially of the transmission shaft between a braking position engaged with a second engagement portion of the transmission shaft and a releasing position radially retracted from the transmission shaft. A shifter sleeve is axially movably mounted on each transmission shafts. The shifter sleeve includes a first space for accommodating the clutch balls, a second space for accommodating the brake balls, and a projection for pressing the clutch balls and brake balls. The sleeve is movable between a position in which the projection presses the clutch balls into the first engagement portion, and a position in which the projection presses the brake balls into the second engagement portion with the clutch balls accommodated in the first space.
摘要翻译： 变速器分别包括连接到左右车轮的传动轴。 每个传动轴具有侧离合器和侧制动器。 侧离合器包括在传动轴的径向上位于与传动轴的第一接合部分啮合的离合位置和从传动轴径向缩回的释放位置之间可移动的离合器球。 侧制动器包括在与传动轴的第二接合部分接合的制动位置与从传动轴径向缩回的释放位置之间可在传动轴径向移动的制动球。 换档套筒轴向可移动地安装在每个传动轴上。 换档套筒包括用于容纳离合器球的第一空间，用于容纳制动球的第二空间，以及用于按压离合器球和制动球的突起。 套筒可以在突出部将离合器球压入第一接合部的位置和突起之间移动，突起将制动球按压在与第一空间中的离合器球接合的第二接合部。
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